Load Specifications
Load data in caliber .300 PRC with .308 | 140gr | Barnes X BT bullet and 86 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Norma MRP.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 58,334 psi | 90% | 3143 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,798 psi | 89% | 3182 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,898 psi | 88% | 3235 fps | 99.1% |
| Accurate 4064 | <<locked>> | 84% | 58,320 psi | 90% | 3199 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 58,798 psi | 90% | 3301 fps | 99.9% |
| Accurate High Country | <<locked>> | 98% | 57,319 psi | 88% | 3379 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 86% | 56,753 psi | 87% | 3209 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 58,784 psi | 90% | 3327 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,159 psi | 86% | 3340 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 55,187 psi | 85% | 3258 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 58,131 psi | 89% | 3241 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 58,305 psi | 90% | 3264 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 58,291 psi | 90% | 3350 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,115 psi | 86% | 3320 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 58,044 psi | 89% | 3310 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,695 psi | 86% | 3310 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,779 psi | 81% | 3251 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,137 psi | 71% | 3153 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,782 psi | 87% | 3399 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,213 psi | 79% | 3225 fps | 96% |
| Bofors RP3 | <<locked>> | 84% | 55,825 psi | 86% | 3205 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,695 psi | 86% | 3310 fps | 97.1% |
| Bofors RP7 | <<locked>> | 90% | 58,233 psi | 90% | 3235 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 84% | 55,927 psi | 86% | 3215 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 90% | 56,507 psi | 87% | 3284 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 88% | 55,898 psi | 86% | 3232 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,405 psi | 85% | 3215 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,840 psi | 87% | 3258 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 56,594 psi | 87% | 3314 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,680 psi | 56% | 2054 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,276 psi | 88% | 3219 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,391 psi | 87% | 3196 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,506 psi | 85% | 3169 fps | 98.3% |
| IMR 4350 | <<locked>> | 92% | 55,622 psi | 86% | 3205 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,999 psi | 86% | 3199 fps | 98.3% |
| IMR 4831 | <<locked>> | 94% | 58,581 psi | 90% | 3281 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 56,173 psi | 86% | 3241 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 57,638 psi | 89% | 3179 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,971 psi | 88% | 3192 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,811 psi | 87% | 3205 fps | 99.3% |
| Lovex S070 | <<locked>> | 92% | 58,030 psi | 89% | 3248 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,645 psi | 73% | 3074 fps | 97.7% |
| Norma 201 | <<locked>> | 82% | 58,523 psi | 90% | 3212 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,667 psi | 89% | 3251 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,289 psi | 87% | 3255 fps | 96.8% |
| Norma MRP | <<locked>> | 98% | 55,376 psi | 85% | 3343 fps | 98.4% |
| Norma URP | <<locked>> | 92% | 56,608 psi | 87% | 3271 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 58,334 psi | 90% | 3274 fps | 100% |
| Ramshot Hunter | <<locked>> | 92% | 55,448 psi | 85% | 3268 fps | 99% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,284 psi | 76% | 3159 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,507 psi | 58% | 2103 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,593 psi | 86% | 3192 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,593 psi | 86% | 3314 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 58,247 psi | 90% | 3314 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,246 psi | 87% | 3337 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 82% | 55,753 psi | 86% | 3156 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,057 psi | 86% | 3205 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,869 psi | 87% | 3232 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 98% | 57,522 psi | 88% | 3297 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 90% | 58,233 psi | 90% | 3235 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,811 psi | 87% | 3205 fps | 99.3% |
| Shooters World Precision | <<locked>> | 84% | 56,971 psi | 88% | 3192 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 58,030 psi | 89% | 3248 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,869 psi | 87% | 3258 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,682 psi | 89% | 3232 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 58,566 psi | 90% | 3127 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,101 psi | 86% | 3077 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,550 psi | 87% | 3150 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,014 psi | 88% | 3294 fps | 97.3% |
| Somchem S335 | <<locked>> | 82% | 58,668 psi | 90% | 3127 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 55,753 psi | 86% | 3196 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 56,043 psi | 86% | 3281 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 58,494 psi | 90% | 3274 fps | 98.3% |
| Vihtavuori N135 | <<locked>> | 82% | 55,796 psi | 86% | 3114 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,767 psi | 86% | 3123 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,782 psi | 87% | 3166 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 58,769 psi | 90% | 3264 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,012 psi | 83% | 3179 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 84% | 57,711 psi | 89% | 3173 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 58,146 psi | 89% | 3274 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 98% | 55,622 psi | 86% | 3284 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 58,479 psi | 90% | 3228 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,724 psi | 87% | 3284 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,095 psi | 74% | 3310 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 58,015 psi | 89% | 3238 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 58,537 psi | 90% | 3261 fps | 97.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 54,737 psi | 84% | 3091 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,981 psi | 78% | 3064 fps | 96.7% |
| Accurate 3100 | <<locked>> | 88% | 38,667 psi | 59% | 2877 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 51,750 psi | 80% | 3094 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,827 psi | 61% | 2933 fps | 97.3% |
| Accurate High Country | <<locked>> | 96% | 53,461 psi | 82% | 3307 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 47,456 psi | 73% | 3038 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 92% | 48,704 psi | 75% | 3136 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,402 psi | 81% | 3274 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 48,834 psi | 75% | 3136 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,399 psi | 74% | 3074 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,517 psi | 79% | 3150 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,884 psi | 58% | 2923 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,917 psi | 66% | 3068 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 48,254 psi | 74% | 3127 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 48,965 psi | 75% | 3186 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 82% | 30,574 psi | 47% | 2726 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 38,522 psi | 59% | 2966 fps | 95.7% |
| Alliant Reloder-26 | 75.9 gr | 84% | 35,056 psi | 54% | 2913 fps | 95.1% |
| Bofors RP15 | <<locked>> | 98% | 48,066 psi | 74% | 3163 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 49,182 psi | 76% | 3091 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 48,965 psi | 75% | 3186 fps | 95.5% |
| Bofors RP7 | <<locked>> | 82% | 45,876 psi | 71% | 2999 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 49,385 psi | 76% | 3097 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 43,743 psi | 67% | 3028 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 82% | 46,398 psi | 71% | 3048 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,723 psi | 55% | 2818 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,200 psi | 82% | 3199 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 45,847 psi | 71% | 3104 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 42% | 1837 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,795 psi | 83% | 3159 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,922 psi | 77% | 3081 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,199 psi | 80% | 3107 fps | 97.7% |
| IMR 4350 | <<locked>> | 84% | 43,700 psi | 67% | 2969 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,193 psi | 68% | 2966 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 38,029 psi | 59% | 2874 fps | 96.9% |
| IMR 4895 | <<locked>> | 80% | 52,823 psi | 81% | 3179 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 54,404 psi | 84% | 3123 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,691 psi | 78% | 3087 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,250 psi | 65% | 2920 fps | 96.7% |
| Lovex S070 | <<locked>> | 82% | 43,047 psi | 66% | 2956 fps | 95.7% |
| Lovex S071 | <<locked>> | 94% | 39,827 psi | 61% | 2904 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 54,969 psi | 85% | 3153 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,908 psi | 78% | 3133 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 49,342 psi | 76% | 3127 fps | 95.2% |
| Norma MRP | 78.9 gr | 90% | 42,525 psi | 65% | 3074 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 39,030 psi | 60% | 2917 fps | 97% |
| Ramshot Big Game | <<locked>> | 80% | 51,155 psi | 79% | 3153 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 40,263 psi | 62% | 2956 fps | 95.6% |
| Ramshot Magnum | <<locked>> | 98% | 45,948 psi | 71% | 3091 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,123 psi | 43% | 1883 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,037 psi | 75% | 3071 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,455 psi | 70% | 3133 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,131 psi | 60% | 2940 fps | 96.8% |
| ReloadSwiss RS 70 | 71.6 gr | 80% | 37,840 psi | 58% | 2936 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 52,576 psi | 81% | 3104 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,572 psi | 72% | 3035 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 53,388 psi | 82% | 3169 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 92% | 47,558 psi | 73% | 3110 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 82% | 45,876 psi | 71% | 2999 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,250 psi | 65% | 2920 fps | 96.7% |
| Shooters World Precision | <<locked>> | 80% | 50,691 psi | 78% | 3087 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 43,047 psi | 66% | 2956 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,978 psi | 72% | 3081 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,244 psi | 83% | 3173 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 55,158 psi | 85% | 3077 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,920 psi | 72% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,394 psi | 64% | 2858 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 47,108 psi | 72% | 3107 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 55,201 psi | 85% | 3074 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 46,485 psi | 72% | 3028 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 35,578 psi | 55% | 2874 fps | 99% |
| Somchem S385 | <<locked>> | 90% | 45,600 psi | 70% | 3035 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 52,504 psi | 81% | 3064 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,605 psi | 81% | 3074 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,454 psi | 68% | 2953 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 40,321 psi | 62% | 2913 fps | 97.3% |
| Vihtavuori N165 | <<locked>> | 96% | 47,456 psi | 73% | 3058 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 51,097 psi | 79% | 3064 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,016 psi | 62% | 2917 fps | 97% |
| Vihtavuori N555 | <<locked>> | 80% | 31,749 psi | 49% | 2759 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,349 psi | 61% | 2877 fps | 99.1% |
| Winchester 760 | <<locked>> | 82% | 43,932 psi | 68% | 3035 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 29,167 psi | 45% | 2762 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,534 psi | 84% | 3182 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 47,950 psi | 74% | 3074 fps | 95% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 86 powders for .300 PRC loaded with the .308 | 140gr | Barnes X BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,399 fps; across all powders the maximum-charge window runs from 2,054 fps to 3,399 fps. Accurate 3100 gives the best case fill at 100 %, and 86 of the 86 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant Reloder-26, ReloadSwiss RS 70, Norma MRP rank at the top here: for .300 PRC with the .308 | 140gr | Barnes X BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.